Wacker unveils silicone fluid emulsions for mild shampoos at in-cosmetics

2017 ◽  
Vol 2017 (6) ◽  
pp. 5
Keyword(s):  
Author(s):  
K. Chien ◽  
R.L. Van de Velde ◽  
R.C. Heusser

Sectioning quality of epoxy resins can be improved by the addition of a 1% silicone 200 fluid (Dow Corning), however this produces a softer block. To compensate, a harder plastic has been used for embedding various tissues encountered in our pathology laboratory. Exact amounts of the plastic mixture can be directly made up for embedding as shown: The chart reveals a Poly/Bed 812 (WPE 145) to anhydride ratio of 1:0.7 and a NMA to DDSA ratio of 7:3. 1% silicone fluid is added to above mixtures.Due to impurities within the DDSA and NMA, the polymerized epoxy blocks vary in darkness and appear to affect sectioning quality. After discussing this problem with Polysciences Inc., they have agreed to purify their anhydrides in an effort to standardize the consistency of the plastic.


1994 ◽  
Vol 43 (2) ◽  
pp. 79-87 ◽  
Author(s):  
Britta Ostermeyer Shoaib ◽  
Bernard M Patten ◽  
Dick S Calkins

Geophysics ◽  
1983 ◽  
Vol 48 (5) ◽  
pp. 606-610 ◽  
Author(s):  
Lucien LaCoste

The LaCoste and Romberg straight‐line gravity meter uses a new suspension in which the movable element moves vertically in a straight line rather than in an arc of a circle (LaCoste, 1973a). It was designed primarily for shipboard operation to avoid effects from cross coupling between various ship accelerations, thereby making it unnecessary to correct for such effects. The straight‐line suspension is a modification of the zero length spring suspension used in all LaCoste and Romberg gravity meters. The new model also uses silicone fluid damping rather than the air damping used in earlier models. Its main advantages over the older models appear to be: it is (1) free of cross‐coupling effects, (2) easier to build and adjust, (3) less subject to slight degradation in performance from rough handling, and (4) less sensitive to ship vibrations. In spite of the above advantages it is doubtful whether the new model will give substantially better accuracy than the previous models, if the previous models are kept in good operating condition by making occasional crosscorrelation analyses (LaCoste, 1973b). Valliant (1983, this issue) describes sea tests of the new instrument.


2004 ◽  
Vol 57 (2) ◽  
pp. 193
Author(s):  
Chang Wook Jung ◽  
Ik Soo Jeon ◽  
Jae Young Jang ◽  
Jee Eun Park ◽  
Chun Young Song ◽  
...  

2002 ◽  
Vol 14 (03) ◽  
pp. 127-130 ◽  
Author(s):  
MING-CHUNG LEE ◽  
CHING-LUNG LIN ◽  
CHIU-LIN HUANG

Silicone fluid is applied to reduce the friction of medical device in this study. Several factors, which might affect the friction of Arterial-Venous Fistula (A. V.F.) Needles, were investigated by a series of experiments. The experimental results showed that a better condition for the coating is using 10/90-weight ratio of MDX4/n-hexane silicone solution and dipping for 1.5 seconds. Two-step coating with an interval of 20 minutes also was examined to give an improvement in the lubricity of needles. It was observed that increased DC 360 concentration in coating solution displays more excellent friction reduction properties. Experimental consequences also showed that the lubricity of needles coated with DC 360 (350cst) is superior to that of coated with DC 360 (12,500cst).


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